Remember a carb is a very crude fuel metering device... It should be relatively easy to replicate, having a fully tuned fuel injection loop will be a little trickier ... But I have no doubt you should be able to get it running!
Your ECU has to work pretty darned well to match the fuelling accuracy of a properly setup SU, and the SU will win hands down in terms of mixture preparation.
The current post is not a debate on whether an su carb will have better mixture control than a home built arduino fuel injection system.